Machine for spinning circular forms of metal



a ShetsSheet 1.

(No Model.)

I. .MINK. MACHINE FOR SPINNING CIRCULAR FORMS OF METAL. No. 451,159,.

Patented Apr. 28,1891.

l'. "Emmi!" H Q K (No Model.) a Sheets-Sheet 2.

- P. MINK.

MAGHINB FOR SPINNING CIRCULAR FORMS OF METAL. No. 451,159. Patented Apr.28, 1891.

llllll 7/1/6 Ill (No Model.) 3 Sheets-Sheet 3.

P. MINK. MACHINE FOR SPINNING CIRCULAR FORMS OF METAL.

No. 451,159. Patented Apr. 28, 1891.

FEE

Witnesses: A I

- for: in.

UNITED STATES FRITZ MINK, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO THEKEY- STONE lVATOH CASE COMPANY, OF SAME PLACE.

MACHINE FOR SPINNING'CIRCULAR l-ORlVIS OF METAL.

SPECIFICATION forming part of Letters Patent No. 451,159, dated April28, 1891- Application filed October 15, 1890. $erial No. 368,206- (Nomodel.)

To all whom it may concern.- Be it known that I, FRITZ MINK, of the citand county of Philadelphia, and State of Pennsylvania, have invented anImprovement in Machines for Spinning or Shaping Circular MetallicForms,of which the following is a specification.

My invention relates to machines for spinning or shaping circularmetallic forms; and it consists of certain improvements which are fullyset forth in the following specification, and are shown in theaccompanying drawings, which form a part thereof.

It is the object of my invention to spin up or shape circular metallicforms by means of mechanism in a rapid, efficient, and economicalmanner.

My invention is, moreover, designed to impart a highly polished orburnished surface to the metal during the spinning or shaping operationand keep it round and to size.

In carrying out my invention I employ a mandrel, upon which the articleto be spun up or shaped is loosely supported with its surface in contactwith a series of forming or shaping rollers. By means of suitabledevices these shaping-rollers may be moved toward or away from thearticle which is being operated upon to permit it being placed upon andremoved from the mandrel. The metal is worked between the mandrel andthe shaping-rollers, the peripheries of which are formed to impart thedesired shape or form to the article. Motion is imparted to theshaping-rollers by means of suitable gearing, by which the rollers maybe moved to or from the article to'be worked while still maintainingtheir proper gearing connections. The action of these shaping-rollersupon the surface of the metal imparts to it a highly polished orburnished effect.

My invention also consists of certain novel constructions andcombinations of parts, which are hereinafter fully described andclaimed.

lVhile the invention is equally adapted to the spinning or shaping ofany circular metallic forms, it is peculiarly adapted to the shaping andpolishing of Watch-case centers, and in the drawings and description itis shown applied thereto.

chine.

In the drawings, Figure 1 is a plan viewof my improved apparatus forspinning or shapingcircular metallic forms. Fig. 2 is an end elevationof the same, lookin g toward the left, with the supporting-mandrel andits connections removed. Fig. 3 is alongitudinal sectional elevationtaken upon the line 7 8 of Fig. 4. Fig. 4 is a cross-sectional view uponthe line 1 2 of Fig. 3. Fig. 5 is a similar view on the line 3 4: ofFig. 8. Fig. 6 is a similar view on the line 5 6 of Fig. 3. Fig. 7isalongitudinal sectional view on the line 11 12 of Fig. 6, showing thesupporting-frames of the shaping-rollers with the rollers, gearing, &c.,removed; and Fig. 8 is an illustrative VlGW showing thesupporting-mandrel and shapingrollers in section to illustrate theoperation of the machine.

A is the main frame or base of the ma- Connected to the frame A by meansof bolts to and movable thereon is a chair A, having its upper surfaceprovided with guides A B is a frame carried by the chair A and movablelongitudinally in the guides A thereof. Carried by the frame B insuitable housings Bis the shaft C, which is provided with .collars c 0,adjacent to the housings B, to

prevent longitudinal movement of the shaft in the frame B.

A is a bracket of the main frame A, in which one end of the shaft 0 issupported.

0' is a sleeve journaled in the bracket A The shaft 0 is keyed to thesleeve 0'.

D is a pulley carried by the sleeve 0 to impart motion thereto and tothe shaft 0.

E is a mandrel carried upon the end of the shaft 0, having its peripheryformed to cor rotation of this disk G for the purpose hereinafter setforth, I prefer to construct it with an annular -shaped slot 9 in itsperiphery to receive the bolts f, the ends of which bear upon thesurface of the disk within the slot. By loosening the bolts the diskmaybe turned upon its axis, the slot 9 permitting the movement upon thebolts.

Connected with the disk G by means of bolts 71. or otherwise is a hollowcircular frame H, (see Fig. 7,) provided with a tubular projection H.

Iis a stud carried by the tubular projection 11.

J is a band-wheel having a tubular extens1on J, which is journaled uponthe stud I. The interior of the band-wheel J is provided with a circulargear K.

Journaled in the disk G are a series of shafts L, each carrying agear-wheel M, which engages with the circular gear K.

L L are links carried by the shafts L, one on each side of the disk G.Carried by these links L L are shafts N, journaled therein and carryingupon their outer or free ends the shaping-rollers n. Carried by theshafts N are gear-wheels N, engaging with the gearwheels M. The links LL support the shafts N with their gear-wheels N in constant engagementwith the gear-wheels M while permitting them to swing from the shafts L.

M are rectangular boxes carried by the shafts T.

O is a disk provided with a series of rectangular slots or guides 0, inwhich the boxes M are guided. The disk 0 is movable in the centralopening G of the disk G, and is provided upon its periphery with anannular groove 0, in which is attached a lever or handle 0 for operatingthe disk 0, the disk G being formed with a slot G,through which thehandle or lever 0 extends. By moving the lever O and turning the disk 0the boxes M are moved in the guides 0, thus moving the shafts N andtheir rollers 07., while the links L L" maintain the constant engagementbetween the gear-wheels N- and M.

P are links connecting the free ends of the shafts N with the shafts L,and P are pivoted arms carried by the shafts L to afford support to theouter ends of the shaftsN beyond the rollers 77.. The shafts N are thussuspended from the shafts L by means of the links L L and P.

The disk G is supported at the top by bolts f, similar to the bolts f,carried by extensions 11 of the frame H.

The lever O is provided with a spri 11gcatch 0, which holds it in anormally-fixed position.

Q is a lever pivoted at q to the longitudinally-movable frame B, and atQ to the slide Q Working in the chair A.

R is an adjustable slide carried by the movable frame B and Working inthe chair A. This slide R may be adjusted longitudinally by means ofscrew-threads and nuts 0', as shown, Fig. 3. The slide R is providedwith a slot or groove 1', which receives the end of aspring-stop R,carried by the chair A. This stop working in the groove or slot '7'limits the movement of the slide R, and consequently of the longitudinalframe. The slide is so adjusted that the movement of the frame B will bearrested when the mandrel E is exactly in position with reference to theshaping-rollers 'n, as shown in Fig. 3.

S is a lever pivoted at s to an adjustable piece S upon the main frameA, and connected by a link T with the transverselymovable frame F.

The operation of the machine is as follows: The article to be shaped isplaced upon the mandrel E of the shaft 0, which, as has been heretoforestated, is of smaller diameter than the article, and has its peripheryformed to correspond with the shape to be imparted. By the operation ofthe lever Q the frame B is moved longitudinally to bring the mandrel Ein the same vertical plane with the rollers a. By the previous operationof the handle or lever O the disk 0 has been turned, causing the boxes Mto move in the guides oand move the rollers 01 away from the commoncenter, so as to admit the mandrel E. By again shifting the handle orlever O the rollers a are moved toward each other to operate upon thearticle supported upon the mandrel E. In Fig. 8 the operation of themandrel and rollers is illustrated. The mandrel E is eccentric withreference to the rollers n, and the metal of the article to be operatedupon is pressed between one of the rollers and the mandrel, as shown,and is worked bethe surface of the metal as it isbeing worked, theworking between the one roller n and the mandrel E causing thewateh-case center or other article that is being operated upon torotate. This working of the metal between the mandrel E and roller ncauses the article to expand slightly or enlarge in diameter, so that atthe commencement of the spinning operation all of the rollers n shouldnot be in contact with the metal, the roller by which the metal is to beworked upon the mandrel being pressed in contact with it, but the othersbeing slightly removed to permit this expansion or enlargement. This is,however, a matter of adjustment to be controlled by the operator. Anadjustment to suit the size of the watch-case center or article to bespun may be obtained by means of the lever S, by

which the frame F may be moved laterally or transversely to the axis ofthe shaft 0 until one of the rollers n has clamped the metal upon themandrel, as shown in Fig. 8. Power is imparted to the belt-wheel J,which carries the circular gear K, by a belt in the usual manner, andthe rollers 11 are driven by this circular gear through the medium ofthe gears M and N in the manner heretofore described. The mandrelE andits shaft 0 are rotated by the belt wheel or pulley D. As the working ofthe metal is performed by one of the rollers n and the mandrel E, it isconsequently desirable to change the roller n, which pertween them. Theother rollers n pressagainst forms this office. For this purpose thedisk G is formed with the -shaped grooves, which permit it to be movedupon the bolts ff to bring a new roller n into operative position. Thepoint at which the handle 0 is connected with the disk 0 is changed tocorrespond with the movement of the disk, and the disk G is providedwith a series of slots G for the handle 0 in each of its positions.

The action of the rollers 02 upon the metal imparts thereto a highlypolished or burnished surface. By this invention the centers of cheapwatch cases formed of filled metal may be shaped or spun with greatrapidity and economy.

' If desired, the inner supporting-mandrel E may be withdrawn and therollers 01 may be used alone, acting upon the outer surface of the pieceof metal operated upon to shape it into the desired circular form. Inthis case the rollers 01. are all brought equally in contact with theouter surface of the metal.

IVhile I prefer the many minor details of construction which have beenshown, they are not necessary to my invention and may be varied withoutdeparting from the principles of it.

What I claim as new, and desire to secure by Letters Patent, is

1. In a spinning-machine, the combination of a rotating shaft having acircular die upon it with a series of rotary dies arranged about thespinning-die, a frame carrying the said series of rotary dies, andmechanism for moving said frame laterally with respect to thespinning-die.

2. In aspinning-machine, the combination of a rotating shaft havingacircular die upon it with a series of rotary dies arranged about thespinning-die, a frame carrying the said series of rotary dies, mechanismfor moving said frame laterally with respect to the spinning-die, andmechanism for moving the dies making up the series of rotary dies to orfrom the spinning-die.

3. In a spinning-machine, the combination of a rotating shaft having acircular die upon it with a series of rotary dies arranged about thespinning-die, a frame carrying the said series of rotary dies, mechanismfor moving said frame laterally with respect to the spinningdie,mechanism for moving the dies making up the series of rotary dies to orfrom the spinning-die, and mechanism for relatively reciprocating thespinning-die in the plane of its rotation toward or from the series ofrotary dies.

t. In a spinning-machine, the combination of a rotating shaft havingacircular die upon it with a series of rotary dies arranged about thespinning-die, a frame carrying the said series of rotary dies, mechanismfor moving said frame laterally with respect to the spinning-die, andmechanism forreciprocating the spinning-die in the plane of its rotationrelatively toward or from the series of rotary dies.

5. In a spinning-machine, the-combination of a rotating shaft having acircular die upon it with a series of rotary dies arranged about thespinning-die, a frame carrying the said series of rotarydies, mechanismfor moving said frame laterally with respect to the. sprnning-die,mechanism for moving the dies making up the series of rotary dies to orfrom the spinning-die, and mechanism for recrprocating the spinning-diein the plane of ts rotation relatively toward or from the series ofrotary dies. g

6. In a spinning-machine, the combination of a rotary die with a seriesof rotary guiding or supporting dies arranged 1n a circle about thespinning-die, a frame to hold said rotary guiding or supporting diesagainst rotation about the spinning-die,powermechanism to rotate all ofthe rotaryguidingor supporting dies with the same surfac'espeed, andmechanism for imparting a relative lateral movement between the saidspinning and guiding dies.

7. In a spinning-machine, the combinat on of a rotary die with a seriesof rotary guiding or supporting dies arranged in a circle about thespinning-die, a frame to hold said rotary supporting or guiding diesagainst rotation about the spinning-die, power mechanism to rotate allof the rotary guiding or supporting dies with the same surface speed,and mechanism for imparting a relative lateral movement between the saidspinning and guiding dies and also an independent relative movementbetween the said dies in the direction of their axes of rotation.

8. In a spinning-machine, the combination of a rotary spinning-die, apositively-rotated holding or guiding die arranged exterior to saidspinning-die, guides to support the work in position between said dies,and power mechanism to impart a relative lateral reciprocation betweenthe said dies. 1

9. In a spinning-machine, the combination of a rotary spinning-die, apositively-rotated holding or guiding die arranged exterior to saidspinning-die, guides to support the work in position between said dies,and power mechanism to impart a relative reciprocation between the saiddies and also a relative longitudinal reciprocation in the direction oftheir axes.

10. In a spinning-machine, the combination of a rotary spinning-die witha series of rotary supporting and guiding dies arranged in a circleabout the said spinning-die, power mechanism for rotating thespinning-die, a mo able support for the supporting and guiding dies, andmeans to adjust said movable frame to bring either of the severalsupporting and guiding dies into position to work in conjunction withthe spinning-die.

11. In aspinning-machine, the combination of a rotary spinning-die witha series of rotary supporting and guiding dies arranged in a circleabout the said spinningdie, power mechanism for rotating thespinningdie, a movable support for the supporting and guiding dies,means to adjust said movable frame to bring either of the severalsupportingand guiding dies into positionto work 111 con unction with thespinning-die, and power mechanism to rotate all of the supportmg andguiding dies at the same surface speed.

12. In aspinning-machine, the combination of a rotary spinning-die witha series of r0- tary supporting and guiding dies arranged in a circleabout the said spinning-die, power mechanism for rotating thespinning-die, a movable support for the supporting and guiding dies,means to adjust said movable frame to bring either of the severalsupporting and guiding dies into position to work in conjunction withthe spinning-die, and means for imparting a relative lateral movementbetween the spinningdie and the supporting and guiding die with which itoperates.

In testimony of which invention I have here- 3 5 unto set my hand.

FRITZ MINK.

Witnesses:

R. M. HUNTER, F. B. MEYER.

